富硒富锌绿茶对大鼠硒锌营养和抗氧化功能的影响

Effects of Se-Zn-rich Green Tea as Diet Supplement on Se-Zn Nutrition and Antioxidant Activity of Rats

本试验通过正常和硒锌缺乏大鼠模型,研究了富硒富锌绿茶(SZT)对机体硒锌营养和抗氧化功能的影响。结果表明,正常膳食中添加SZT,不影响硒锌的利用率,可以显著提高机体硒水平和抗氧化能力,且不会因硒锌过量而导致机体急、慢性中毒或病理变化。低硒锌膳食中补充SZT,能够显著改善大鼠硒锌缺乏症状,提高机体硒锌水平,增强抗氧化酶活力,降低丙二醛含量,缓解氧化应激,且功效显著优于无机硒锌。

Effects of application of selenium(Se)-and-zinc(Zn)-rich green tea(SZT)as diet supplement on the nutrition and antioxidant activity of Se-Zn-deficient lab rats were studied.The results showed that SZT addition in a standard diet exerted no significant effect on the bioavailability of the trace elements in the rats.However,it significantly increased the body Se content and antioxidant capacity and avoided the acute or chronic poisoning or pathological changes on the rats caused by excessive Se-Zn intake.In all,the supplement on a normally low Se-Zn diet significantly alleviated the symptoms caused by Se-Zn deficiency,raised the body Se-Zn contents,enhanced the antioxidant enzymes activity,reduced malondialdehyde,and relieved oxidative stress on the lab animals.Furthermore,SZT was significantly more effective than inorganic Se and Zn in relieving the nutritional deficiency in rat with respect to those regards.